Sunday, April 11, 2010

Earthquake Resistance Construction from Megalithic Era in Nias, Indonesia

There is example of earthquake resistant building in the megalithic era. That examples exist in Nias, North Sumatra, Indonesia. Vernacular houses in Nias was not responding when rocked. Wisely designed with the principles of earthquake resistant. At the columns foot of the building are divided into two types, namely the main structural columns that stand in an upright position and the column amplifier located in a position intersecting to form the letter X in italics.

Wooden blocks or large stones deliberately placed on the sidelines of the column amplifier as a weight to keep the building from the wind. While the top end of upright columns connected by beams buffer through a connection peg system which was then carrying beams on top floors.

Diagonal columns, with no beginning and no end point, intertwine to prop up the oval plan building with a cantilevered surrounds the entire side of the floor plan. Like a belt, a series of beams placed lengthwise around the body of the building. On top of the building belt, fins pile wall is lined with 80 inches mounted tilting outwards. Among these fins fitted sheet infill of the board. The use of pools is not the only one in Nias. Different from other regions, in Nias pools do not become positive space that serves as a place to weave, store, or raising livestock, but actually carried out a structural function.

These columns are rather large so their strenght not only able to raise the number of earthquake safety for buildings, but also gives a feeling psychologically safe for the residents.

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